My akg 550's pads started to flake and peel after 5 years of light use, so I got these genuine leather lambskin xl replacement pads on recommendations from reddit threads and YouTube videos. I purchased directly from the manufacturer website as they had a sale and shipping was only 1 day--just as fast as amazon. They weren't the easiest to replace but with some patience and diligence, I was able to fit them without too much trouble. Check out youtube for the how-to videos if you have any issues. One things to note is that they don't have the plastic ring the original AKG pads have, but once they are on, they don't move around. The soundstage is slightly changed, but after listening to music with them on for 30 min, I don't notice it anymore--songs I've been listening too forever sound just as I remember. I'm really satisfied thus far. My only hope is that they last longer than the original pads.